Our entire court system is based on the idea that a witness can provide accurate testimony. We're also generally too trusting of people who are confident. So if somebody speaks with certainty, we tend to give them more weight than we should. I think its a trugt ing to overcome, because the courts are based on this sort of testimony. It's built into the system in a lot of ways. And you still get judges who really don't know what they're talking about and exclude testimony from memory experts for reasons such as 'it's obvious uto everyone'